Door-locking mechanism.



e. E. Mmmm'. DOOR LOOKING IBOBANIBI.

LPPLIOATIOI PILEDAPLIR. 1918.

Patented 0ct.28,1913.

2 suma-Bass? 1.

Gerge E-Merftti G. E. HEBBITT..

D003 LOOUUG IBOHUIS.

Anuouxol msn umu, ma.

Patented 0015. 28, 1913.

l IHBBTHBBET l.

.Illa lllllll/ NITED STATES PATENT OFFICE.

GEORGE E. MEBRITT, OF BALTIMORE, MARYLAND, ASSIGNOB OF ONE-HALF TO WILLIAM N. CRISP, OF BALTIMORE, MARYLAND.

noon-LOCKING Meenemen.

Bpeoication of Lettore Patent.

Patented Oct. 28, 1913.

Application tiled April 12, 1913. Serial No. 760,707.

To all rwhom. it may concern.'

Be. it known that I, Geenen E. Maam'rr, a citizen of the United States, residing at Baltimore, in the State of Maryland, have invented certain new and useful Improvements in Door-Locking Mechanism; and I do declare the followin to be a full, clear, and exact description o the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to car doors, and more especial] to those which have a lateral movement andv are supported by a link connection with the han er so that they may be moved out of the door opening and slid aside; and the object of the same is to produce an im roved lockin mechanism for cardoors o this kind. 'l iis obect is carried out by the construction ereinafter more fully described and claimed, and as shown in the drawings wherein- Figure 1 is a side elevation of a portion of a car, with the door thereof closed and locked by my improved mechanism; Fig. 2 is a lan view of the parts shown in Fi 2, and Ifig. 3 is a horizontal section on a out the line 3-3 of Fi 1. Fig. 4 is a vertical section on about t e line 4--4 of Fig. 1. Fig. 5 is an enlarged section on the line 5-5 of Fig. 3, and Fig. 6 is a section on the line 6 6 of Fig. 5. Fig. 7 is a perspective detail of the locking mechanism. Fig. 8 is an enlarged perspective detail of the bracket hereinafter referred to. Fig. 9 is an enlarged perspective detail of one of the hangers.

In the drawings the letter YV designates the side wall of a box car, and D is a door supported by hangers II which travel on a track T carried by the car wall and extending over the door-opening, the track inclining inward above said opening as seen at I in Fig. 2 so that as the door is closed its front edge passes into the opeuin in a manner well understood. The rear phanger H is connected with the top of the door by a swinging link L as seen in Fig. 9, in order to permit the rear edge of the door to be pressed into said opening when it is closed, and the means for doing this and holding the door in that position constitute my improved lock.

Coming now to the detalls of the lock itself, the numeral 1 designates a casing or andle is swun housin carried by the car Wall behind the door, a l as shown in Fig. 1 at the left side of the door opening and in this casino is mounted a rock shaft 2 having a handige 3 by means of which it may be oscillated, the free end of the handle being shown iu Fig. 7 as having an eye 4 adapted to engage a staple 5 (see Fig. 1) throu rh which latter may be assed a padlock or holding the door in ocked position. The shaft 2 carries a double crank 7 from one arm of which a rod 8 extends upward and from the other arm of which a rod 9 extends downward, and the remote or outer ends of thc rods are connected with the mechanism for moving both the up er and lower portions of the rear ed e o the door in a manner to be explains The numeral 10 desi nates a double crank shaft mounted in suita le bearings and having at one end a crank 11 which engages an eye 12 from which depends a tongue 13 pivoted as at 14 within a fork 15 at the upper end of the rod 8. In similar manner the numcral20 designates a Crank shaft whose crank 21 engages an eye 22 in a member having an upstanding tongue 23 which is pivoted at 24 in a fork 25 at the lower end of the rod 9. The inner end of the shaft 10 carries another crank 16 moving in a slot 17 in a sliding hook 18, and in similarmanner the inner end of the crank shaft 20 carries another crank 26 moving in a slot 17 in a sliding hook 28. Thus it will be secu that b operatin the rock shaft 2 by means of its andle 3, oth double crank shafts 10 and 2O will be rocked and their cranks 16 and 26 will slide the hooks 18 and 28 iu suitable guides which are provided for that pur ose.

ear the upper edge of the door it carries on its inner face a de ending flange 2O whose lip engages the hook 18, and near its lower edge it carries another flange 21 whose lip engages the hook 28; and as the two hoo cs are moved inward with respect to the car wall W the door is of course caused to move inward into the door opening. If now the handle 3 be locked, it will be impossible to move the door out of the door opening and then to the left or to open Iposition. On the other hand, when the to the other extreme of its movement the ooks are projected and the two flanges and with them the door moved outward, so that the rear edge of the door clears the frame at the rear (or left). side.l of the door opening,l as the linkvL of the, hanger I-I permits, and then the door can be moved to the left in a manner which will be clear. The bracket 30 shown in Fig. 8 is attached to the post of the door frame by screws or bolts passing through holes 31, and this bracket carries a sleeve 32 which affords a bearing for the double crank shaft 10. A similar bracket is provided for the lower double-crank shaft 20, and its sleeve 32 is seen in Fi 3. By preference the car wall carries a s lect-metal guard 33 on its outer face above the door opening, as indicated in Fig. 4, to prevent rain and snow from beating into the car above the door when the latter is closed. In the drawings I have shown the door as of sheetinctal construction, but its details are not essential to the successful operation of this invention. So also with respect to the hangers, save that the left-liand hanger in Fig. 1 must be of that tvpe which hasia link L on which the i'ear edge of the door may swing outward from the door openin or into it, as well understood with doors o this type. The proportions and details of parts are not essentia The lfunction of the double pivot connection between the cranks 11 and .21 and the rods 8 and 9, is to permit the elves to turn in a plane with the cranks on tie double crank shafts at the sameztime that the rods move in a plane at right anlrles thereto and parallel Ewith that-of *the double-cranks 7 on the rock shaft 8, which follows from the construction of parts, because the rock shaft 2 projects tlirou h the cai' wall and at right angles to it w creas each of the double crank shafts stands parallel with the car 'wall because the hook which it actuates must move transversely o the wall as will be clear. f

W hat is claimed as new is:

.1. In a car door locking mechanism, the combination with the car wall having a door opening, a track extendin along the former and over the latter and inclined inward at its front end, the door, and 'hangers supporting the door from said track and permitting its lateral movement relative thereto; of flangesextending across the in- 'ner' face', 0 f the door near its top' and bottom,4 hooks sliding in suitable guides and with their bills respectively engaging said flanges and their. bodies having upright slots, double crank shafts whereof tie inner cranks engage said slots, a. rock shaft "havin an o' erating handle, a double crank on this sha t and rods connecting its extremities with the other cranks of said crank shafts, for the purpose set forth.

2. Ina car door locking mechanism, the combination with the car wall having a door opening, a track extendin along the former and over the latter, the oor, and hangers supporting the door from said track and permitting its lateral movement relative thereto; of flanges extending across the inner -face of the door near its top -and bot.- tom, hooks sliding in guidesl and respectively engaging said flan es, their bodiesI having u right slots, dou le crank shafts whereof t ie inner cranks engage said slots, eyes mounted on the outer cranks and each eye having a tongue, a rock shaft havin" a handleI and a double crank, rods pivoter to the extremities of said crank and each having a fork in its outer end, and a pivotal connection between said fork and one of said tongues, for the purpose set forth. 3. A door-operating mechanism consisting of a rock shaft having a crank handle and a double crank, a pair of slidable members'iengaging the door, a. pair of fixed brackets having sleeves, a crank shaft rotatably mounted in each sleeve and havin a crank at one end engagin f one of sai slidable members and a eranc at its other end, and an eye engaging said last-named crank and pivotally connected with one of the cranks of said operating mechanism.

In testimony whereof I have hereunto .set my hand in presence of two subscribing witnesses.

GEORGE E. MERRITT.

Witnesses CHARLES Enw. Knysna, HERMAN C. Msanrrr.

Copies ot this patent may be obtained for ave conta each, by addressing the Commissioner ot Parents, Washington, D. 0." 

